You are not obsessed. You're just alone. I also have this. My mind keeps going to the faces of guys that are nothing more than memories. Sometimes I let go of my anger for how they treated me and sometimes the anger comes rolling back in. Especially when loneliness hits hard.

If I knew how to save myself from this....I would have done it a looong time ago. At some point I had picked up jogging and swimming, which somehow kept my mind off of those feelings. Maybe the answer is there.